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Chap 13 part IV

Cerebellum and Onward

Cerebellum Function 1. Smoothes and Coordinates body movements
Cerebellum: Cerebellar Peduncles- tracks connecting cerebellum to brains stem 1. Superior Cerebellar Peduncle- midbrain 2. Inferior Cerebellar Peduncle- medulla oblangata 3. Middle Cerebellar Peduncle- Pons
Cerebellum must continuously receive information from? 1. Inner Ear- equilibrium 2. Peripheral Propioceptors- movement of limbs 3. Pyramidal Tract- information from cerebral motor cortex
Cerebellum two hemispheres divided into what lobes? 1. Anterior Lobe 2. Posterior Lobe 3. Flocculonodular Lobe -connected by VERMIS
Meninges Functions 1. Protect and cover CNS 2. enclose and protect vessels supplying CNS 3. contains CSF
Meninges: Three Tissues 1. Dura Mater 2. Arachnoid Mater 3. Pia Mater
Cerebrospinal Fluid 1. Formed in CHOROID PLEXUSES 2. Circulation From: Ventricles, Medial and Lateral Apertures, Subarachnoid Space, Arachnoid Villi, and Blood of superior sagittal sinus
Ascending Tracts in Spinal Cord 1. Carry sensory information to the brain 2. Three Types: Dorsal Column Pathway, Spinocerebellar Pathway, and Spinothalamic Pathway
Dorsal Column Pathway -Ascending Tract 1. Discriminative touch, pressure, and limb position
Spinocerebellar Pathway of Ascending Tract of Spinal cord -Ascending Tract -subconscious proprioception
Spinothalamic Pathway -Ascending Tract -Pain and temperature
Descending Tracts of Spinal Cord deliver motor instructions from the brain to the spinal cord
Descending Tracts One Type Pyramidal Tracts
Pyramidal Tracts -Descending Tract -control precise and skilled voluntary movement
Created by: vs604